Symmetry
A shape that looks the same when you divide it in half has ____ .
What is a line of symmetry?
Lines that always stay the same distance apart.
A closed shape with all straight sides.
What is a polygon?
An angle that is 90 degrees.
What is a right angle?
A triangle shows these angles: 50 degrees, and 50 degrees. The missing angle must be ___.
What is 80 degrees?
A shape that fits inside of itself when you turn it has ____ .
What is rotational symmetry?
A 4-sided shape that has all equal sides. Example: square.
What is a rhombus?
A 4-sided shape with all equal sides, and right angles at all 4 corners.
What is a square?
An angle that is less than 90 degrees.
What is an acute angle?
The angles of a square are not labelled, but we know that they add up to this.
What is 360 degrees?
A square has this many orders of rotational symmetry.
What is 4?
A line that connects the vertices of a quadrilateral (not the side of a shape.)
What is a diagonal?
A four sided shape with 2 sets of parallel lines.
What is a parallelogram?
An angle that is greater than 90 degrees.
What is an obtuse angle?
A quadrilateral shows these angles: 60 degrees, 100 degrees, 140 degrees. The missing angle must be ___.
What is 60 degrees.
A rectangle has this many orders of rotational symmetry.
What is 2?
A ____ is always a polygon.
What is a quadrilateral?
A 4-sided shape with only one set of parallel lines.
What is a trapezoid?
The angles of a triangle add up to this many degrees.
What is 180 degrees?
A triangle shows these angles: 40 degrees, and 80 degrees. The missing angle must be ___.
What is 60 degrees?
An equilateral triangle has this many orders of rotational symmetry.
What is 3?
A _____ is never a parallelogram.
What is a trapezoid?
A 4-sided shape with 2 sets of equal sides that touch.
What is a kite?
The angles of a quadrilateral add up to this many degrees.
What is 360 degrees?
A quadrilateral shows these angles: 50 degrees, 50 degrees, 220 degrees. The missing angle must be ___.
What is 40 degrees?